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Symmetrical traffic after update interface

Machi Ma
Level 1
Level 1

Hello

Previously I have adjusted the interface from

-------- original version -----
interface GigabitEthernet0/2
 speed 1000
 duplex full
 nameif outside
 security-level 0
 ip address 111.222.333.2 255.255.255.248
!


interface Port-channel1
 duplex full
 lacp max-bundle 8
 nameif INSIDE
 security-level 100
 ip address 192.168.0.1 255.255.255.0
!

interface Port-channel1.100
 vlan 100
 nameif net100
 security-level 100
 ip address 202.73.1.1 255.255.255.0
!

with policy allocated
Server located at 202.73.1.1/24 is able to access in/out to the internet.

-----
after that, I updated the interface to following. It move 192.168.0.1 to Vlan1 to Vlan 50

----- updated version -------
interface GigabitEthernet0/2
 speed 1000
 duplex full
 nameif outside
 security-level 0
 ip address 111.222.333.2 255.255.255.248
!


interface Port-channel1
 duplex full
 lacp max-bundle 8
 nameif INSIDE2
 security-level 100
 ip address 192.168.85.1 255.255.255.0
!

interface Port-channel1.50
 vlan 50
 nameif INSIDE
 security-level 100
 ip address 192.168.0.1 255.255.255.0
!
interface Port-channel1.100
 vlan 100
 nameif net100
 security-level 100
 ip address 202.73.1.1 255.255.255.0
!
--------------------------------
However, after change.  It detected the huge size of symmetrical traffic to 202.73.1.0/24 appear at interface GigabitEthernet0/2.

Could you please advise where I can trace the problem?

Thanks!

1 Reply 1

Philip D'Ath
VIP Alumni
VIP Alumni

Is the problem outgoing, in which case check out "port-channel load-balance", or inbound (in which case, check out whatever it is plugged into).

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